EGO PSA1000 Operator's Manual page 26

NOTICE:
If there is difficulty in removing
the bar and chain from the mounting
surface, place the pole saw upright,
with one hand supporting the bar, and
loosen the chain-tensioning screw
counterclockwise with the other hand
(Fig. 16). Then remove the bar with the
chain.
NOTICE:
This is a good time to inspect
the drive sprocket for excessive wear or
damage.
26
POLE SAW ATTACHMENT — PSA1000/PSA1000-FC/PSA1020/PSA1020-FC
16
Chain-tensioning Screw